I was killing a friend when he logged, and I kept hitting his bleeding body with my bat. I guess I never killed him, as I was never given the prompt to loot his body, and when he rejoins he is about 15 seconds away with no bleeding status and no remnants of any engagement. Since I had jumped him he never had the chance to shoot me, but now, he knew exactly where I was and ran out and got a head-shot on me.